William wirt pitts



(No Model) W. W. PITTS.

LAMP.

A1\To.583,080.` Patented May 25,1897.

ma Noms Pcrsns ce, mma-uma.. wnsmucrron. n. c.

UNITED STATES PATENT EEIcE.

VILLIAM VIRT PIT'IS, OF IIILLSBOROUGH, TEXAS.

LAMP.

SPECIFICATION forming part of Letters Patent No. 583,080, dated May 25,189'?.

Application filed October 19, 1896.

To all whom t may concern:

Be it known that I, WILLIAM WIRT PITTs, a citizen of the United States,residing at Hillsborough, in the county of Hill and State of Texas, haveinvented certain new and useful Improvements in Lamps; and I do declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

vMy invention ,relates to lamps, and more particularly to those whichare designed for use in headlights; and its novelty and many advantageswill be fully understood from the following description and claims whentaken in conjunction with the annexed drawings, in which- Figure 1 is asectional view of a headlight such as used on locomotives with myimproved lamp in position therein. Fig. 2 is a vertical diametricalsection of the lamp with the lower portion broken away. Fig. 3 is anelevation of the threaded stem which carries the llame-spreading buttonswith said buttons in position thereon. Fig. 4 is a plan view of theupper button. Fig. 5 is a plan view of the wheel for Ventilating thelamp-chimney and preventing air currents from passing down into thesame, and Fig. 6 is a perspective view of the bracket which supportssaid wheel.

In the said drawings similar letters designate corresponding parts inall of the several views, referring to which- A indicates aheadlight-casing which may be equipped with a reiiector a and lens h andmay otherwise be of the ordinary or any other` suitable construction,and B indicates my improved lamp, which in the present embodi- Inent ofthe invention is shown as extending through the rear portion of thereflector, although it may be arranged in vany other suitable manner.The body c of the lamp may be constructed in the manner common to thelamps employed in headlights and may be provided with the usual means(not illustrated) for adjusting the wick d, and may also be suitablyconnected or provided with an oil-receptacle. (Also not illustrated.)

The wick d is of tubular form and is arranged in a wick-tube of annularform in cross-section, as illustrated.

This wick-tube VSerial No. 609,314. (No model.)

ported therein by the nut E, which bearsl upon the upper side of thespider, as shown. Said stem D is provided with the ordinary button F,which is interiorly threaded to receive it, and is also provided abovesaid button F with my improved button G, which is also interiprlythreaded to receive it, as shown. The

button G may be of any shape suitable to the purpose of my invention,but I prefer to provide it with the enlarged and dished portion h at itsupper end, as shown. Said button G is also provided with the aperturesc', which are formed in the portion 72, as shown, and are designed forthe upward passage of air. This upward passage of air through the buttonG serves the highly important function of preventing the current of airwhich passes in at the bottom of the lamp from eddying above the buttonG and thereby cause the formation of smoke.

The construction described permits of the buttons F G being readilyadjusted on the stem D, and also permits of said stem, with the buttonsupon it, being adjusted, according to the shape and size of flamedesired, by the nut E.

As will be readily observed by reference to Fig. 2, the circular body offlame when the lamp is lighted entirely surrounds the buttons F G. Inconsequence of this the buttons will be highly heated and willmaterially assist in the consumption of the lamp'black and otherparticles of combustion, thus reducing the liability of the chimneybeing smoked to a minimum.

H indicates the lamp-chimney, which is arranged upon the body c, aroundthe hood C,

as better shown in Fig. 2, and I indicates a tube of sheet-brass,copper, Russia iron, or other suitable metal, which is arranged In theICO upper portion of the chimney I and extends about the proportionaldistance illustrated above and below the upper end thereof. This tube Iis supported in the chimney II by the lugs J, which are preferablystruck from it and bear upon the upper end of the chimney, as shown, andit is designed and adapted to increase the draft, a strong draft beingdesirable because of the large flame formed by the buttons F G andbecause it produces abrighter light which will highly heat the button G,for the purpose before described. Such tube I, however, is notabsolutely essential, as the buttons F G, when properly adjusted, willafford a strong bright light and will at the same time efteetuallyprevent smoking of the Chim ney.

I have found from experience that when the tube I is provided with thecontracted lower portion j and the iiared end L the llame lis prevent-edfrom contacting with the chimney and is assisted in entering the tube I.For this reason I prefer to form said tube in the manner shown.

K indicates a horizontally-disposed windwheel which is arranged at theupper end of the tube I, as better shown in Fig. 2. This wheel I isrotated bythe current of hot air passing upwardly through the tube I,and it serves to ventilate the chimney, so as to promote combustionofthe wick, and at the saine time eftectually prevents currents of airfrom passing downwardly in the chimney and causing the flame to smoke.Said wheel K may be mounted in any suitable manner; but I prefer tomount it upon one en d of the bracket L, (see Fig. 6,) whichhas thecircular portion which surrounds the tube I, the loop mf, which receivesthe wall oi' the tube, the inwardly-extending portion n, and the centralstein or portion p, which has a socket at its upper end to receive thewheelsecuring screw q.

As before stated, the tube Iis not absolutely essential, and when it isomitted and it is desired to employ the wheel K it is obvious that thebracket L may be readily placed on the chimney H in the same mann erthat it is placed upon the tube I. rIhe tube I and the wheel K are,however, desirable, as they contribute materially in increasing theeliiciency of the lamp, and this without rendering the lamp much moreexpensive than those at present in use.

IIa-ving described my invention, what I claim, and desire to secure byLetters Patent, 1s-

I. In a lamp, the combination of an annular wick-tube, buttons supportedabove the center of the wick-tube; one'of said buttons having one ormore draft-apertures, a chimney of glass or similar material surroundingsaid buttons, a metallic tube arranged in the upper portion of the glasschimney and extending above the same and having the inwardlytaperedlowerportion provided with the flared end, and a wind-wheel arranged in theupper end of said metallic tube and supported by a bracket mounted onsaid tube, substantially as specified.

In a lamp, the combination of an annular wick-tube, buttons supportedabove the center oi' the wick-tube; one of said buttons having one ormore draft-apertures, a chimney ot glass or similar material,surrounding said buttons, and a metallic tube arranged in the upperportion of the glass chimney and extending above the same, and havingthe inwardly-tapercd lower portion provided with the flared end,substantially as specified.

In a lamp, the combination of a burner, a chimney, the bracket havingthe circular portion surrounding the chimney, the loop receiving theupper end of the chimney-wall, the inwardly-extending portion and theupwardly-extendin g central stem, and the windwheel mounted and adaptedto turn on said stein, at the upper end of the chimney, substantially asand for the purpose set forth.

In testimony whereof I atlix my signature in presence of two witnesses.

"ILIJABI IVIRT PITTS.

IV itnesses:

J. R. DUDDiNo, C. M. SMrrHDEDE.

